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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pershina A. G., Brikunova O. Y., Vtorushin S. V., Gereng E. A., Ogorodova L. M., Timin A. S., Demin A. M., Krasnov V. P., Abakumov M. A., Vaneev A. N.
Заглавие : Variation in tumor pH affects pH-triggered delivery of peptide-modified magnetic nanoparticles
Место публикации : Nanomedicine: nanotechnology, biology and medicine. - 2021. - Vol. 32. - С. 102317
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): ph profile--endocytosis--iron oxide magnetic nanoparticles
Аннотация: Acidification of the extracellular matrix, an intrinsic characteristic of many solid tumors, is widely exploited for physiologically triggered delivery of contrast agents, drugs, and nanoparticles to tumor. However, pH of tumor microenvironment shows intra- and inter-tumor variation. Herein, we investigate the impact of this variation on pH-triggered delivery of magnetic nanoparticles (MNPs) modified with pH-(low)-insertion peptide (pHLIP). Fluorescent flow cytometry, laser confocal scanning microscopy and transmission electron microscopy data proved that pHLIP-conjugated MNPs interacted with 4T1 cells in two-dimensional culture and in spheroids more effectively at pH 6.4 than at pH 7.2, and entered the cell via clathrin-independent endocytosis. The accumulation efficiency of pHLIP-conjugated MNPs in 4T1 tumors after their intravenous injection, monitored in vivo by magnetic resonance imaging, showed variation. Analysis of the tumor pH profiles recorded with implementation of original nanoprobe pH sensor, revealed obvious correlation between pH measured in the tumor with the amount of accumulated MNPs.
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2.

Вид документа :
Шифр издания : Г/U 61
Автор(ы) : Khamidullina L. A., Puzyrev I. S., Slepukhin P. A., Pestov A. V., Tobysheva P. D., Burygin G. L., Dorovatovskii P. V., Zubavichus Y. V., Mitrofanova A. V., Khrustalev V. N., Tskhovrebov A. G., Timofeeva T. V., Solari E., Nenajdenko V. G.
Заглавие : Unsymmetrical trifluoromethyl methoxyphenyl β-diketones: effect of the position of methoxy group and coordination at Cu(II) on biological activity
Место публикации : Molecules. - 2021. - Vol. 26, № 21. - Ст.6466
ББК : Г
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): copper(ii)--diketonates--cytotoxic activity--antimicrobial activity
Аннотация: Copper(II) complexes with 1,1,1-trifluoro-4-(4-methoxyphenyl)butan-2,4-dione (HL1) were synthesized and characterized by elemental analysis, FT-IR spectroscopy, and single crystal X-ray diffraction. The biological properties of HL1 and cis-[Cu(L1)2(DMSO)] (3) were examined against Gram-positive and Gram-negative bacteria and opportunistic unicellular fungi. The cytotoxicity was estimated towards the HeLa and Vero cell lines. Complex 3 demonstrated antibacterial activity towards S. aureus comparable to that of streptomycin, lower antifungal activity than the ligand HL1 and moderate cytotoxicity. The bioactivity was compared with the activity of compounds of similar structures. The effect of changing the position of the methoxy group at the aromatic ring in the ligand moiety of the complexes on their antimicrobial and cytotoxic activity was explored. We propose that complex 3 has lower bioavailability and reduced bioactivity than expected due to strong intermolecular contacts. In addition, molecular docking studies provided theoretical information on the interactions of tested compounds with ribonucleotide reductase subunit R2, as well as the chaperones Hsp70 and Hsp90, which are important biomolecular targets for antitumor and antimicrobial drug search and design. The obtained results revealed that the complexes displayed enhanced affinity over organic ligands. Taken together, the copper(II) complexes with the trifluoromethyl methoxyphenyl-substituted β-diketones could be considered as promising anticancer agents with antibacterial properties
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3.

Вид документа : Статья из журнала
Шифр издания : 54/T 80
Автор(ы) : Loginova S. A., Borisevich S. V., Rusinov V. L., Ulomskii E. N., Charushin V. N., Chupakhin O. N.
Заглавие : Toxicity of Triazavirin, a Novel Russian Antiinfluenza chemotherapeutic
Место публикации : Antibiotiki i Khimioterapiya . - 2012. - Vol.57, №11-12. - 8-10
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): mice--toxicity--triazavirin
Аннотация: The study of the toxicity of triazavirin, a new antiinfluenza agent, showed that the maximum concentration of the drug, inducing no microscopically visible changes in the structure of the monolayer and the cells of the MDCK and SKEV cell cultures, was 128 and 100 mcg/ml respectively. The maximum drug dose for single intraperitoneal administration inducing no signs of acute intoxication in albino mice weighing 10-12 g was 1000 mg/kg. In investigation of the chronic toxicity it was shown that oral administration of the drug (by 0.05 ml) to the albino mice in a dose of 200 mg/kg (maximum possible concentration by the solubility) daily for 10 days was well tolerated by the laboratory animals. The maximum tolerable dose of triazavirin for the albino mice was 200 mg/kg.
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4.

Вид документа : Статья из журнала
Шифр издания : 54/T 44
Автор(ы) : Medvedeva N., Polyak Yu., Kuzikova I., Orlova O., Zharikov G.
Заглавие : The effect of mustard gas on the biological activity of soil
Место публикации : Environmental Research. - 2008. - Vol. 106, № 3. - С. 289-295
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A special group of substances that are very dangerous for the biosphere includes war gases such as mustard gas (bis(2-chloroethyl)sulphide). The influence of mustard gas hydrolysis products (MGHPs) on soil microbiota has been investigated. These substances bear numerous toxic effects on soil microorganisms. They change significantly the number and the specific composition of soil microbiota and inhibit the enzyme activity of soils. The main "ecological targets" of mustard and its hydrolysis products' toxic action have been determined. MGHPs affect the growth and reproduction of soil micromycetes, as well as their morphological and cultural properties. Increase in number and size of mitochondria in the fungal cells is accompanied by increase in dehydrogenases activity. Cell permeability influenced by MGHPs grows in connection with concentration of toxicants. Increase of permeability corresponds to growth of the amount of unsaturated fatty acids. The changes in the fatty acid composition of lipids in the cells of the soil micromycetes display their adaptation to adverse impact of the substances studied. MGHPs and thiodiglycol enhance synthesis of polysaccharides and pigments.
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5.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Grishko V. V., Tolmacheva I. A., Galaiko N. V., Pereslavceva A. V., Anikina L. V., Volkova L. V., Bachmetyev B. A., Slepukhin P. A.
Заглавие : Synthesis, transformation and biological evaluation of 2,3-secotriterpene acetylhydrazones and their derivatives
Место публикации : European Journal of Medicinal Chemisrty. - 2013. - Vol.68. - С. 203-211
Примечания : Bibliogr. : p. 211 (34 ref.)
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): antiviral activity--acetylhydrazone--betulonic acid
Аннотация: It has been previously shown that semi-synthetic A-secotriterpene acetylhydrazones of 1-cyano-28-methoxy-28-oxo-2,3-seco-2-norlup-20(29)-en-3-al and 1-cyano-2,3-seco-2-nor-19β,28-epoxy-18αH-olean-3-al (1, 2) inhibit the vesicular stomatitis virus (VSV) replication. To improve the antiviral activity against VSV, structural modifications of compounds 1 and 2 were performed, and new A-secoderivatives containing the acetylhydrazone fragment were obtained from betulonic acid and its methyl ester, allobetulone, and 3-oxo-18βH-glycyrrhetinic acid methyl ester. The inhibitory effects of these compounds on VSV replication in porcine embryo kidney (PEK) cells were determined after infection. It was shown that introduction of the 3′-acetyl-5′-methyl-1′,3′,4′-oxadiazoline fragment into lupane triterpene structures lead to an increase in the antiviral activity of A-secotriterpene derivatives. However, the presence of a heterocyclic moiety enhanced toxic activity and reduced the therapeutic indices of these agents. Investigation in the anti-proliferative activity of the heterocyclic derivatives has shown high sensitivity of A-549, MS and RD tumor cell lines to lupane (R)-oxadiazoline 11a. The pro-apoptotic effect of 11a was confirmed by the AnnexinV/PI analysis
\\\\expert2\\NBO\\European Journal of Medicinal Chemistry\\2013, v.68, p.203.pdf
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Varaksin M. V., Smyshliaeva L. A., Rusinov V. L., Melekhin V. V., Charushin V. N., Chupakhin O. N., Makeev O. G., Baldanshirieva A. D., Gubina O. G.
Заглавие : Synthesis, characterization, and in vitro assessment of cytotoxicity for novel azaheterocyclic nido-carboranes – Candidates in agents for boron neutron capture therapy (BNCT) of cancer
Место публикации : Tetrahedron. - 2021. - Vol. 102. - С. 132525
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): azaheterocycles--bnct--cytotoxicity--carboranes
Аннотация: A series of novel water-soluble azaheterocyclic derivatives of nido-carborane bearing quinoxaline, 2H-imidazole or 1,2,4-triazine moieties were first synthesized in 82–91% yields. The structures of these boron-enriched compounds were confirmed by the data of NMR, IR spectroscopy, and mass spectrometry. To access the toxicity level for these organoboron compounds, the cytotoxicity indexes (IC50) were determined using by the MTT test on both human glioblastoma cell A-172 (IC50 = 150–243 μM) and human embryonic lung cells (IC50 = 424–944 μM) lines. The obtained preliminary results from in vitro analysis enable the synthesized water-soluble azaheterocyclic carboranes to be considered as challenging candidates in the design of agents for boron-neutron capture therapy (BNCT) of malignant tumors.
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7.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Galaiko N. V., Nazarov A. V., Tolmacheva I. A., Slepukhin P. A., Vikharev Y. B., Maiorova O. A., Grishko V. V.
Заглавие : Synthesis of Triterpene A-Condensed Azoles
Место публикации : Chemistry of Heterocyclic Compounds. - 2014. - С. Article in Press
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): alfa-hydroximino ketones--1,2,3-triazoles--allobetulone
Аннотация: Lupane and 18αH-oleanane α-hydroximino ketones were used to synthesize derivatives condensed at ring A with a substituted azole fragment, namely, C(2)-C(3)-fused oxazoles and 1,2,3-triazoles. Triterpene isoxazoles fused at the C(1)-C(2) bond are described for the first time. An optimized method was proposed for the synthesis of unsubstituted 1,2,3-triazoles, displaying cytotoxic activity (IC50 8.4-40.7 μM) relative to rhabdomyosarcoma, lung carcinoma, and MS melanoma cell lines.
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Khudina O. G., Ivanova A. E., Burgart Ya. V., Gerasimova N. A., Evstigneeva N. P., Saloutin V. I.
Заглавие : Synthesis of mycostatics based on 4-aryldiazenyl-3,5-dimethylpyrazoles
Место публикации : Russian chemical bulletin. - 2021. - Vol. 70, № 6. - С. 1124-1130
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): 3-arylhydrazinylidenepentane-2,4-dione--condensation--hydrazines--4-aryldiazenyl-3,5-dimethylpyrazoles
Аннотация: The condensation of 3-arylhydrazinylidenepentane-2,4-diones with hydrazine hydrate, 2-hydroxyethylhydrazine, benzylhydrazine hydrochloride, and 4-hydrazinylbenzenesulfonamide hydrochloride gave 4-aryldiazenyl-3,5-dimethylpyrazoles. An alternative route to the synthesis of N-substituted 4-aryldiazenylpyrazoles is based on the alkylation of NH-pyrazoles with haloalkanes. The synthesized compounds were tested for antimicrobial activity against eight pathogenic dermatophytes, yeast-like fungi of the Candida genus and the bacteria Neisseria gonorrhoeae. The structure—activity relationship analysis showed that 4-tolyldiazenylpyrazoles bearing H, AcO(CH2)4, or HO(CH2)4 substituents at the N(1) atom have the highest mycostatic activity against all the dermatophyte strains under study. However, 4-aryldiazenyl-3,5-dimethylpyrazoles proved to be quite cytotoxic against the McCoy B cell line.
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9.

Вид документа : Статья из журнала
Шифр издания : 54/S 98
Автор(ы) : Egorov I. N., Rusinov V. L., Slepukhin P. A., Chupakhin O. N.
Заглавие : Synthesis and Crystal Structure of (S)-2-((S)-2-(N-Ts-Amino)-3-methylbutanoyl)-3-(1H-indol-3-yl)-6-phenyl-3,4-dihydro-1,2,4-triazin-5(2H)-one [Electronic resource]
Место публикации : Journal of Chemical Crystallography . - 2010. - Vol. 40, № 4. - С. 387-390
Систем. требования: http://www.springerlink.com/content/h067587131031v7t/fulltext.pdf
Примечания : 2.11.2011 г.
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The diastereoselective synthesis, NMR and X-ray structure of (S)-2-((S)-2-(N-Ts-amino)-3-methylbutanoyl)-3-(1H-indol-3-yl)-6-phenyl-3,4-dihydro-1,2,4-triazin-5(2H)-one—a potential antivirus agent are reported. The compound crystallizes in the triclinic space group P1 with unit cell parameters: a = 5.9259(6) A, b = 9.6370(12) A, c = 12.9541(9) A, = 109.210(9)°, beta = 90.804(7)°, y = 105.074(10)° and Z = 1.
\\\\Expert2\\nbo\\Journal of Chemical Crystallography\\2010.v.40, N 4, p.387.pdf
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Dutysheva E. A., Utepova I. A., Trestsova M. A., Anisimov A. S., Charushin V. N., Chupakhin O. N., Margulis B. A., Guzhova I. V., Lazarev V. F.
Заглавие : Synthesis and approbation of new neuroprotective chemicals of pyrrolyl- and indolylazine classes in a cell model of Alzheimer's disease
Место публикации : European journal of medicinal chemistry. - 2021. - Vol. 222. - С. 113577
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): pyrrolylazines--neuroprotectors--chaperones--amyloid-beta--alzheimer's disease
Аннотация: One of the major causes of neurodegeneration in the pathogenesis of Alzheimer's disease is the accumulation of cytotoxic amyloid species within the intercellular compartments of the brain. The efficacy of the anti-proteotoxic mechanism based on the molecular chaperones Hsp70 and Hsp90 in numerous types of neurons is often low, while its pharmacological enhancement has been shown to ameliorate the physiological and cognitive functions of the brain. Suggesting that the chemicals able to induce heat shock protein synthesis and therefore rescue neural cells from cytotoxicity associated with amyloid, we have synthesized a group of pyrrolyl- and indolylazines that cause the accumulation of heat shock proteins, using a novel method of photocatalysis that is employed in green chemistry. The selected compounds were tested in a cell model of Alzheimer's disease and demonstrated a pronounced neuroprotective effect. These substances increased the survival of neurons, blocked the activation of β-galactosidase, and prevented apoptosis in neurons cultured in the presence of β-amyloid.
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